Pile shell with nonmetallic lining



Dec. 1, 1931. M. M. UPSON PILE SHELL WITH NONMETALLIC LINING Filed May 2, 1929 FIGJ.

gvme'ntoz MMUPSON 351 M Qbtovnmf @6 01, 76m MW Patented Dec. l, 1931 nrnrsn STATES PATENT QFFICE J MAXWELL M. UPSON, OF ENGLEWOOD, NEW

PILE' COMPANY, OF NEW YORK, N. Y., 'A CORPORATIONOF NEW JERSEY PILE simian WITH NoNMErALLIo meme Application filed. May 2,

It is sometimes necessary to penetrate astratum of gravel or hard cutting material in order to reach a substantial bottom. While passing through such a stratum the pile shell 1%; is liable to be punctured, thus permitting water and sand to enter the shell, frequently to such a degree asto render it impossible to clean out the water and sand'and there-. fore necessitating the driving of another pile n; and adding greatly to the expense of the job.

For illustrative purposes my invention is shown in connection with a well known type of shell which is spirally corrugated and has heavy steel wire wound in the corrugations. The spiral wire and corru ations form a very strong and rigid shell wnich under most conditions will withstand the compression of the earth and maintain a hole after the core or collapsible mandrel is withdrawn. at

shell rather deeply in order to hold the wire firmly in position. This renders the metal of the corrugations particularly vulnerable to abuse during the driving operation, and punctures are very apt to occur at the corrugat1ons.

This invention contemplates lining the interior of the shell with a non-metallic waterproof material of such nature as to strengthen and stiffen the shell and better enable it to resist puncture. One suitable material for such a lining is concrete, another is asphalt, but other similar substances may be used with satisfactory results.

If wire reinforcements are used in the shell as above described, the lining helps to hold the wire in position and the corrugations therefore do not need to be as deep as in ordinary practice, or may be entirely dispensed with, and the wires may even be in the form of rings, instead of in a continuous spiral.

Shallow corrugations more easily push aside the soil and do not afford ready opportunity for the cutting material in the soil to ls are liable to be cut or punc-t usually made, it is necessary to corrugate the JERSEY. ASSIGN OR TO RAYMOND CONCRETE 1929. Serial m. 359,7 0.

engage'and puncture the under sides of the corrugations. Furthermore, the, lining ma.- terial being waterproof will prevent leakage into the shell even if the metal'shell be cut or punctured.

Further and other objects and advantages will appear from the specification and claims, and from the accompanying drawings which i show by way of illus tration what is now considered the preferred embodiment of the invention. V I i v Fig. 1 is a view of a complete shell section, partly broken. away to show interior construction. j v

Fig. 2 is an enlarged fragmentary crosssection showing details. V

The taperedsteel shell 10 is corrugated spirally as at 12 and the reinforcing wire'lt is wound in the shallow corrugations. 'The shell is lined, between the wires, with the nonmetallic material 16, preferably of such thickness that the inner surface of the lining is flush with the inner surfaces of the wires. The larger end of each shell section is left unlined and uncorrugated, in order better to accommodate the small end of the next adjoining shell section, each complete shell for a pile being usually made up of a number of sections. As is well known in the art, the shell is mounted on a core, driven to firm bottom while on the core, and the core then removed and the shell filled with concrete to form the pile.

It is to be understood that the invention is not limited to the specific construction and embodiment herein specified but may be used in other ways without departure from its spirit as defined by the following claims.

I claim 1. As an article of manufacture, a pile shell for driving and subsequent filling comprising a thin outer member of metal, reinforcing wires contacting with the inner surface of said metal and spaced apart and a lining of waterproof material of a thickness no greater than the thickness of the wires said lining weaving an uninterrupted central bore for a driving core and preventing leakage of fluid into the shell.

2. As an article of manufacture, a pile slgnature.

shell for driving and subsequent filling comprising a thin outer member of metal having corrugations therein, Wires engaging the corrugations on the inner surface of the member and a non-metallic lining in which said Wires 3 are embedded,said lining leaving an uninterrupted central bore for a driving core and preventing leakage of fluid into the shell. 3. The method of forming a pileshell for driving and subsequent filling, which 'consists in taking a tubular shell of thin gauge metal, winding a reinforcing element in contact with the internal 'surface-of'said shell, and lining said shell with a non-metallic compound which leaves a core receiving bore vequally'as large as that left by the reinforcingelement. I V 4.: The method of forming a pile shell for .drivingjand subsequent filling, which consists in taking a tubular shell of thin gauge metal,- forming shallow corrugations in said sh ell', winding a reinforcing element in conptact with the internal surface of said shell, ,ivhich is seated in the corrugations and linin-g said shell With a non-metallic compound which leaves a core receiving bore equally as large. as that left by the reinforcing element. M 'The m'ethod of forming a pile shell for driving and subsequent filling, which con- SQ sists in taking a tubular shell of thin gauge metal, forming shallow spiral corrugations in said shell, winding a reinforcing element into's'aid corrugations, and filling the spaces between the spirals of said reinforcing ele- 5'men't with a non-metallic waterproof material having no greater thickness than the reinforcingelement to permit a driving core tocontactwith the reinforcing element.

' In testimony whereof I hereto aflix' my MAXWELL M. UPSON. 

